4.75×10.6
=(5-1/4)×10.6
=5×10.6-1/4×10.6
=53-2.65
=50.35
题目错了
0.9999×0.7+0.1111×3.7
=0.1111×9×0.7+0.1111×3.7
=0.1111×(6.3+3.7)
=0.1111×10
=1.1111
4.75×10.6
=(5-1/4)×10.6
=5×10.6-1/4×10.6
=53-2.65
=50.35
题目错了
0.9999×0.7+0.1111×3.7
=0.1111×9×0.7+0.1111×3.7
=0.1111×(6.3+3.7)
=0.1111×10
=1.1111